Answers

Add 12/63 and 90/27

1^st number: 12/63, 2^nd number: 3 9/27

12/63 + 90/27 is 74/21.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 63 and 27 is 189
   
   Next, find the equivalent fraction of both fractional numbers with denominator 189
2. For the 1st fraction, since 63 × 3 = 189,
   12/63 = 12 × 3/63 × 3 = 36/189
3. Likewise, for the 2nd fraction, since 27 × 7 = 189,
   90/27 = 90 × 7/27 × 7 = 630/189
4. Add the two like fractions:
   36/189 + 630/189 = 36 + 630/189 = 666/189
5. 666/189 simplified gives 74/21
6. So, 12/63 + 90/27 = 74/21
   In mixed form: 311/21

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